1
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
The momentum of a photon of energy 1 MeV in kg m/s will be
A
5 $$ \times $$ 10$$-$$22
B
0.33 $$ \times $$ 106
C
7 $$ \times $$ 10$$-$$24
D
10$$-$$22
2
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
A photocell employs photoelectric effect to convert
A
change in the frequency of light into a change in the electric current
B
change in the frequency of light into a change in electric voltage
C
change in the intensity of illumination into a change in photoelectric current
D
change in the intensity of illumination into a change in the work function of the photocathode.
3
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
Ionization potential of hydrogen atom is 13.6 eV. Hydrogen atoms in the ground state are excited by monochromatic radiation of photon energy 12.1 eV. According to Bohr's theory, the spectral lines emited by hydrogen will be
A
one
B
two
C
three
D
four
4
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
The following figure shows a logic gate circuit with two inputs A and B and the output C.

AIPMT 2006 Physics - Semiconductor Electronics Question 64 English 1

The voltage waveforms of A, B and C are as shown below.

AIPMT 2006 Physics - Semiconductor Electronics Question 64 English 2

The logic circuit gate is
A
OR gate
B
AND gate
C
NAND gate
D
NOR gate